Question 1: Someone has asked me to find some of the swivel doohickies that are on the back of a frame to hold the picture in. What are they called?
Question 2: I have a 6" (150mm) trim saw with a 1/2" (12.7mm) bore. A number of my diamond blades have 5/8" holes (15.9mm). What are the whatsamajiggits used to change the size of the hole called?
My brain has apparently gone on holidays.
Thanks in advance